Language
Silicon Carbide (SiC) Ceramic Foam Filters are engineered for filtration and flow conditioning of molten ductile iron, gray iron, and copper alloys. Featuring a 3D interconnected open-cell framework, these filters capture non-metallic inclusions, slag, and dross via depth-filtration mechanics while converting turbulent gating streams into uniform laminar flow.
$ 27.40
Matrix Composition:
High-purity Silicon Carbide (SiC) combined with a stable silicate-ceramic bond phase.
Microstructure:
Reticulated open-cell foam geometry providing high specific surface area for inclusion adsorption.
Refractoriness:
Maximum operating temperature threshold up to 1500°C.
Porosity Structure:
Controlled apparent open porosity of 80% to 90% to ensure unobstructed metal throughput.
01
Mechanisms:
Combines cake filtration (surface trapping of macro-slag) and depth filtration (adsorption of micro-particles onto ceramic struts via surface tension and tortuous path dynamics).
02
Hydraulic Control:
Suppresses metal velocity and turbulence in the runner system, minimizing aspiration, sand mold erosion, and re-oxidation.
03
Thermal Shock Resistance:
Withstands rapid thermal gradients without structural spalling upon direct contact with iron melts at 1350°C to 1450°C.
Ductile Iron (SG Iron):
Wind turbine components, automotive brake discs, crankshafts, and hydraulic housings.
Gray Iron:
Engine blocks, cylinder heads, and industrial machine beds.
Non-Ferrous Alloys:
Heavy bronze, brass, and copper alloy castings.
Placement Position:
Inserted horizontally inside the gating system (runner, parting line, or directly under the downsprue base print).
|
Property |
Typical Value |
Test Reference / Condition |
|
Primary Phase |
SiC matrix (50% - 90% dependent on grade) |
ICP-AES elemental analysis |
|
Max Working Temp |
<= 1500°C |
Pyrometric Cone Equivalent |
|
Bulk Density |
0.36 - 0.50 g/cm3 |
ASTM C20 |
|
Cold Compressive Strength |
>= 0.9 - 1.2 MPa (Parallel to axis) |
ASTM C133 (Room Temp) |
|
Porosity |
80% - 90% |
Archimedes Method |
|
Thermal Shock Stability |
>= 6 cycles (1100°C to air quench) |
Internal Quench Protocol |
|
Standard Dimensions |
Square/Rectangular: 50x50 to 150x150 mm Round: Dia 40 to Dia 150 mm |
Thickness: 15, 22, 25 mm |
Pore Density (PPI) Selection:
10 PPI: Applied for heavy section gray/ductile iron castings (> 500 kg) requiring high volume throughput and fast pouring rates.
20 PPI: Standard baseline specification for automotive and general industrial iron castings (50 kg to 500 kg).
30 PPI: Selected for thin-walled, pressure-tight components requiring strict micro-inclusion control.
Sizing & Flow Calculation:
Filter cross-sectional area must maintain a ratio of 1.5x to 2.0x relative to the gating system choke area to avoid flow restriction.
Peripheral ceramic fiber sealing gaskets must be utilized to eliminate liquid metal bypass.
Production Route:
Polyurethane foam impregnation, controlled slurry rheology coating, drying, and controlled-atmosphere high-temperature sintering.
Dimensional Sorting:
100% size verification for length, width, and thickness tolerances (+/- 1.0 mm).
Mechanical Testing:
Lot-based destructive cold compressive strength testing and visual sweep for blocked cells, warping, or structural cracks.
Traceability:
Each production lot is marked with a batch tracking code corresponding to raw material assay records.
Custom Profiles:
Geometric fabrication in round, rectangular, square, or stepped configurations to fit existing foundry pattern equipment.
Edge Sealing Options:
Factory-applied or loose ceramic fiber gaskets to secure the filter inside the mold print without crushing during box closure.
As one of the most professional silicon carbide ceramic foam filter manufacturers and suppliers in China, we're featured by quality products and good service. Please feel free to buy high-grade silicon carbide ceramic foam filter made in China here from our factory. Contact us for more details.
improve molten metal quality, runner system filter, High Temperature Ceramic Filter(0/10)
